head to head · open source
Vector vs opentelemetry-ruby
Vector has 22,589 GitHub stars, 2,286 forks, 2,512 open issues and last shipped 2 days ago. opentelemetry-ruby has 606 stars, 301 forks, 144 open issues and last shipped 3 days ago. Vector leads on adoption by 3,628% (22,589 vs 606 stars). Vector is written in Rust under MPL-2.0; opentelemetry-ruby is written in Ruby under Apache-2.0. Vector has attracted 10% as many forks as stars, opentelemetry-ruby 50%. Vector was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (hacktoberfest, metrics), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| Vector | opentelemetry-ruby | |
|---|---|---|
| GitHub stars | ★ 23K | ★ 606 |
| License | MPL-2.0 | Apache-2.0 |
| Written in | Rust | Ruby |
| Last push | 2026-09-18 | 2026-09-17 |
| Forks | ⑂ 2.3K | ⑂ 301 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Vector if
- You weight community size — 23K stars and counting
- You want the MPL-2.0 license terms
- Your stack matches Rust
- You value the larger contributor base for long-term maintenance
pick opentelemetry-ruby if
- You want the opentelemetry-ruby feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Ruby
- You evaluated both and opentelemetry-ruby fits your workflow better
About Vector
Vector is an open source observability data pipeline written in Rust and licensed under MPL 2.0. It operates as an end to end system for collecting, transforming, and routing logs and metrics within the cloud native monitoring ecosystem. The project is maintained by Datadog's Community Open Source Engineering team, and its topics include agent, cloud native, data transformation, datadog, etl, events, forwarder, logs, metrics, and monitoring.
read the full Vector overview →
About opentelemetry-ruby
OpenTelemetry Ruby is the vendor neutral Ruby client for OpenTelemetry — an Apache 2.0 API and SDK that lets Ruby applications produce distributed traces, metrics and other telemetry — built for Ruby developers and platform teams who want observability data without committing to a single vendor's agent.
read the full opentelemetry-ruby overview →
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Frequently asked questions
Is Vector or opentelemetry-ruby more popular?
Vector has 22,589 GitHub stars and opentelemetry-ruby has 606. Vector has the larger community by that measure.
Are Vector and opentelemetry-ruby free?
Both are open source. Vector is licensed under MPL-2.0 and opentelemetry-ruby under Apache-2.0. Neither carries a licence fee.
What is the difference between Vector and opentelemetry-ruby?
Vector is written in Rust and opentelemetry-ruby in Ruby. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Vector or opentelemetry-ruby?
Choose Vector if you want the larger community (22,589 stars) or its MPL-2.0 licence terms. Choose opentelemetry-ruby if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.